Answer / n.k.singh

if we are designing any system we must know reliability and
stability of the system and purpose of the system.without
any goal or aim how to design any system, there should be
some idea behind the system, acordingly design is made

Answer / john h

Answe #1 is right. you need to know your system will work
and under what conditions and design for them. as
Conditions change so may your system reliability.

For instance AWG can handle a specified current at a given
size but under some conditions this value may need to be
derated. same goes for many components. Nema can often take
more abuse then IFE ( a european standard i can't recall
the name accuratly) as these components are made with less
resources and operate in tighter tolerances. Often but not
always cheaper then NEMA for the same ratings.

This also gets into dirty electrical waveforms and magnetic
flux you do not want a near by conduit accidently inducing
a voltage on a signal line triggering a false or true
conditions. this can bring about changes in your control
system causing erratic behaviour

What are the components of feedback control system?

1 Answers  

---

what are the types of electromagnetic forces developed in practical transformer?

1 Answers   APC, BPCL Bharat Petroleum, Electrical Tech,

---

WHAT IS THE DIFFRENCE BETWEEN EARTHED AND UNEARTHED CABLE (XLPE)?

6 Answers   Essar,

---

Transformer how to maintaince a check b check c check d check

1 Answers   DIC India,

---

what is the suitable voltage of transmission line to transmit 10000w power through 250 km. (a)11kv (b)33kv (c)66kv (d)132kv ]and please tell me whats the logic behind it

7 Answers   ONGC,

---

How to distinguish between the armature wires with the field wires of a Dc motor ?

5 Answers  

---

Why does curving the pole faces in a dc machine contributes to a smoother dc output voltage from it?

1 Answers  

---

while selecting transformers for 33 kva feeder normally we ask for 33/433 kv why not 33/415

1 Answers  

---

How to select earthing strip for 100kw induction motor ?

2 Answers  

---

what will happen if multimeter(selector switch at DC voltage) and terminal at current is connected to DC supply?

1 Answers  

---

WHY WE CAN GENERATE POWER IN 3PHASE MODE ONLY NOT IN 4 OR 5PHASE

18 Answers  

---

how to calculate the formula of cable size if motor kw is given

1 Answers   APT,

---